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What is the most efficient/elegant way to parse a flat table into a tree?

...rsive queries in MySQL 8.0 in my presentation Recursive Query Throwdown in 2017. Below is my original answer from 2008: There are several ways to store tree-structured data in a relational database. What you show in your example uses two methods: Adjacency List (the "parent" column) and Pa...
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How to subtract 30 days from the current datetime in mysql?

...irDoug Fir 13.2k3434 gold badges106106 silver badges201201 bronze badges 2 ...
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Find object by id in an array of JavaScript objects

...p; x.color == 'red').foo – Apqu Oct 20 '16 at 10:33 2 For me, best answer so far. Doesn't need jQ...
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Espresso: Thread.sleep( );

...er() – Prabin Timsina Jun 23 '16 at 20:45 4 I hope you understand that its a sample, you can copy...
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Linear Regression and group by in R

... year | state, data = d) Coefficients: (Intercept) year CA -1.34420990 0.17139963 NY 0.00196176 -0.01852429 Degrees of freedom: 20 total; 16 residual Residual standard error: 0.8201316 share | ...
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Determining complexity for recursive functions (Big O notation)

... answered Nov 20 '12 at 6:37 codercoder 3,60011 gold badge1515 silver badges3333 bronze badges ...
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fatal: git-write-tree: error building trees

...y this was necessary. – mmigdol Jun 20 '14 at 18:18 1 @mmigdol Yeah - I'd like to see an explanat...
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Application not picking up .css file (flask/python)

... | edited Mar 7 '14 at 20:45 answered Mar 7 '14 at 20:27 ...
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Logger slf4j advantages of formatting with {} instead of string concatenation

... | edited May 20 '14 at 20:17 Hendy Irawan 16.6k88 gold badges9191 silver badges100100 bronze badges ...
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Calling a function from a string in C#

...System.Reflection;" – jptsetung Aug 20 '13 at 15:07 1 Could this also be used to invoke a functio...